[ FWA ] diamond fluorescence intensity grading

The fluorescence intensity of the diamond grading , the following is zakaly Xiaobian for you to collect relevant information , hoping to help you. Zakaly same diamond , cheap half. Zakaly jewelry electrocution 8 years, he used the Internet information technology to one pack stabilizer  optimize diamond jewelry supply chain , to overturn the traditional diamond sales model, drained the last drop of diamond profits . for the public to create a "low price", " high quality" , "credibility " shopping platform .
Approximately 50 % of the diamonds in the ultraviolet radiation will produce fluorescence, diamond fluorescence color, intensity of the diamond 's appearance ( body color ) have a certain influence , and sometimes even affect the price of diamonds , which is the fluorescence intensity of diamond grading significance diamond Fluorescence most common color is blue and white , followed by yellow and white , yellow, green , orange and other colors. above with moderate-intensity blue-white fluorescent colorless diamond will look more white, such as "Jager diamonds" strong blue- white fluorescent light yellow diamonds also available with yellow body color complementary , looks nearly colorless , improved color grade diamond if diamond yellow fluorescence , in any case will cause lower color grade diamond . too strong fluorescence also diamond will show hazy oily , reducing the transparency of the diamond , affecting the clarity of the diamond , such as the "Pre mier ¨ ultra Blue Diamond fluorescence also many jewelers to create a sense of mystery and surprise .1 fluorescence intensity of the fluorescence intensity level ( flourescence degree) is a diamond in the long visible under UV irradiation intensity level . China's " diamond grading " standard, the diamond 's fluorescence intensity level is divided into strong , weak , no four grades . CIBJO also put fluorescent level is divided into four grades . GIA is classified as strong , strong , weak , no five levels .2 fluorescence intensity of the Impact modifier for PVC  fluorescence intensity grading grading method is the use of visual methods in the long UV , compared to standard fluorescent intensity like stone, the fluorescence intensity of the diamond grading . fluorescence intensity of the sample (masterstone flourescence degree) refers to a set of calibrated fluorescence intensity level standard round brilliant cut stone like cobalt stone . usually consists of three components , in turn, representative "strong" , "medium" , "weak" three levels lower . following steps: ( a ) the fluorescent sample by strong, medium and weak order, from left to right in the ultraviolet fluorescent lamp placed equidistant black box . ( 2 ) open length ultraviolet light switches . ( 3 ) to be graded diamonds gripping tweezers , place the UV fluorescent obscura in comparison with the fluorescence intensity of the sample to determine the fluorescence intensity level .3 . fluorescence intensity level division rules
( 1) If the diamond to be graded higher than the fluorescence intensity of the fluorescence intensity of the comparative sample in the " strong '', still with the" strong " indicates the fluorescence intensity level of the diamond (2 ) when the classification of the diamond to be less than the fluorescence intensity of the fluorescence intensity of comparative sample in the " weak" , the use of " none" represents the level of fluorescence intensity of diamond (3 ) subject to a grading diamonds and a fluorescence intensity vs. the same sample , the level of fluorescence intensity of the fluorescence to be graded diamond intensity level . ( 4 ) to be graded diamonds fluorescence intensity between adjacent two contrast between samples , the lower -level representatives to be graded diamonds fluorescence intensity level . ( 5 ) the same fluorescence intensity of the diamond , the fluorescence intensity on there are slight differences. ( 6 ) in addition to the fluorescence intensity magnesium stearate  to be marked , the need to mark the fluorescent colors.
The fluorescence intensity of the diamond is a diamond grading report content , can not be compared with the color grading . Commercially, high color grade (H colors or more ) , high clarity (VS and above ) if diamonds have medium blue and white fluorescent its price is often lower than the non-fluorescent diamonds 1010 to 10%, the fluorescence is stronger, the greater the impact on prices , while slightly yellow diamond (I color less ) than if a medium blue and white fluorescent , can increase up to 4% weak fluorescence and low clarity diamond fluorescence little impact on prices . diamond prices with yellow fluorescence can often save 5 % to 10% , but the real diamond trade , few people put a fluorescent and non-fluorescent diamonds detailed separately . therefore fluorescence actual impact on diamond prices significance,